I used a pirate variety during chemo which helped with sleep and nausea. Unfortunately that info is no help to you as there was no way of knowing what the chemical properties were. My onc was ok with it in a noncommittal sort of way. I took it at night before bed and stopped when chemo was over. I dislike being stoned and find it makes me anxious but there is no doubt it helped with the sleep and I had zero nausea when taking it. Mind you, I had zero nausea from chemo during BC V1 either so maybe there was no correlation.